Steam-superheating furnace.



' Patented .Iuly I8, i899; F. L. SLUCUM. STEM: suPEmlEATlna Fummc'e.

(Application Sled Apr. 14, 1897.)A (Kyo Nudel.)

if. A

To cillin/172.0771,v zit l17m/y concern):

' NITED S'rirrnsfr PATENT rrice FRANK n. sLooUM, or PITTSBURG,PENSYLVANI.

STEAM-su PERI-1islam-LNeV FURNAC. "i

' srnezrrca'rron forming parrfof'Leaers Patent No. e2e,o94, dated Juiy'leises.

BeitknoWnthatLFRaNKL;SLOCUM,a'resi dent of Pittsburg," in the coun-ty of:Allegheny and State ofk Pennsylvania, have invented a new andus'efulImprovement inv Steam-Superheating Furnaces; and I do hereby Vdeclarethe following to be av full, clear, andexact description thereof. Y

My invention relates to steam-superheatin g furnaces; and it consistsincertain improvements in furnaces for raising the steainto anexceedingly high heat, thefspecial purpose of snperheatin g the steambeing to :raise it to a sufficient heat for-making 'gas by a continuousprocess in `which' the heat of the steam is sufficient both-tocause itsbreaking up. and combination' with the' carbon or other 'elementsof thecoal and to maintain thecoal by` the heat of the steamiat rpropervtemperato res lfor gas-making, as described in a separate apf plicationof even 632,199. Y n

Inthefurnaceforming the subject-,matter date herewith, Serial No.

yof this application I employ a furnace-chamber preferably divided intotwo compartments, 'ahrc-chamber and a'doWntake-chamber, and within theseI arrange a series of return steamsuperheatingpipes and horizontaltubular fines, so located that vthe steam'is gradually brought intothehottest partof the furnace, v

while/the iiues areso 'arranged' vthat they increase by sizeor number incrossQsectional area from the steam-inlet to" thef steam-disf charge,whereby as theV steam is raised to'. a

higher and higher temperatura'and thereby. expanded, 'space for holdingthe same'with out material increa'seof pressure-is provided landleakagein the furnace prevented.

Theparticular points of inventiondesired to be covered will 'be.hereinaftermore particularly set forth andlclairned. l

v'llo enableothers skilled in the art to construct'and use my invention,I will v'describe the same more fully', referring to the accompanyingdrawings,` in Which-- Figure 1 is a longitudinal'central section ofthefu'rnace., Fig. 2 is a vertical cross-secn tion on the line 2 2, Fig.'1. Fig. 3 is a ver- Vtical cross-section on the line 3 3, Fig. l. Fig.

4 is a vertical cross-section on the line 4 4, Fig. 1 g and Fig. 5 is alongitudinal section on `.the line' 5 5, Fig. Y

-forrfeeding coal or like fuel to the grate.

' Attimi@rea-Amun,1897;f serainaszics. (Nomina.)

Like letters indicar-@like pans in @een of the gures.

" f The Yfurnace is inclo'sed Within A'the front wall ct, rear wall l),topwall c', and side walls d d'.' .It has a heating-chamber A, in Vwhichare located the different stea'ln-superheating pipes and lines and whichispreferably arranged as shown, being divided into the main lire-chamberle. and the doWntake-chamber f back of the same,vthe two being dividedby, the bridge-wall g. At the base of the downtakefchamberf is theescape-hoef', which leads either to a chimney or, as preferred by inc,to the boiler, where the heat not utilized Vinthe furnace canlbeutilized for the generation of steam. x

. The furnace can beheated by any suitable fuel, being shown as havingthe grate e and e2, having valso thefeeding-'opening e5 Located withinthe downtake-chamberf are the return steam-superheating pipeshm'ithwhich the steam-inlet i leads from the boiler; As more'clearly showninFig. 3, the return-bend ash-pit steam-su perheatin g pipesarearrangedso that' their ent-ire surfaces are exposed to directcon- `tact withtheA hainey and heated products; These pipes are located inv such ya wayas to fill the space' of the'downtake-chamber not ocaupied by thesuperheating-ilnes 7c la vand la? 2. sidered veryvdesirable, isasfollows': The inlet-pipe t' communicates with the vertical se` ries ofreturn-pipes h', which'communicates The arrangementv shown, which isconwith the vertical series h2 and he'under the lower flue' k, theseries h3 communicating with the vertical series h4, which leads up tothe base of the chamber beside the ,'ilues 7c la to the base of thefines 102W and then extends A over. and 'communicates with the verticalseries h5, which eiitends downwardly and coinmunicates finally withthetile due k at h6."

' The irst point to notice in connectionwith the return tile flues lola' k2 k2 and also with the tile lines in the main vor re chamber e, theupper series of which is marked Z and the lower series Z, is that thecross-sectional area of the iiues through which the steam passessuccessively increases fromV the inlet-point, where the pipe h opensinto the flue 7c through the several tlues 7c k2 Z Z to thedischarge-openying Z2, so that Ythe space is provided for the y soYexpansion of the steam under the exceedingly high heat to which it israised. This is either accomplished by employing tile of increasingsectional area, such as shown by the tiles la Zt', respectively, oremploying an increased num- Vber of tile in each series, the series k2having two tile,the series Z having three, and the series Z having four.Theinvention is intended to cover the construction whether the increasedsectional area is obtained by increase in size or number.

As the tile are subjected to exceedingly high heats and as such heatsmight lead to cracking of the tile, IV prefer to arrange them in the wayhereinafter described both for supporting the tile and to provide forquick removal and change in case of breakage. It will be noticed thatrectangular tile are used and that they extend into theside walls cZ d',and, further, that separate tile, such as might be termed seat-tile, arebuilt within the walls, as shown at m, these seat-tile having angularseats 'm' to receive the ends of the tile. These seat-tile are providedwith such angularrecesses at the ends where access is not required tothe flues, and, as shown in Figs. 2 and 4, they serve the extrafunctiony of providing the passage Within the side Walls from one flueto another. They are preferably formed of fiat plates having the seatsm' along the sides, so as to provide for building up for anyconstruction or shape of opening, either for a vertical opening, as atn, to con nect the iiues 7c 7o or for the side passage, as at fn', whichconnects the flues 7a2 with the dues Z; The opposite spaces of saidseat-tiles m are also preferably provided with angular seats m2, intowhich tile plates m3 tit, so as to close the inner ends of the portsforming connection between the tlues. In order to brace these severalfiues and hold the parts to place, I lnay also employ metal plates p,resting against the seat-tiles and tile plates, and like plates p' onlthe other side of the seattiles fitting around the tile iiues, so as togive support thereto.

In order to obtain access to the several tlues, so that they may becleaned, if necessary, or where one of the iiues is cracked or Worn outto remove the same, I provide the brick-lined doors r r r2, the door?lgiving access to the iiuet, the door v" giving access to the fines 7sand 7.52, and the dooro'2 giving access to the fluesZ and Z', thesedoors of course being made of suii'icient sizel to provide for theWithdrawal of the flue or l'iues through the same. These doors alsoclose the outer ends of the ports or passages connecting the flues wherenecessary. For example, it will be seen that the Iiues 7c' and k2 extendwithin the side Wall CZ@ being supported therein by the plates p',similar to those used at the other -ends and their ends resting inseat-tiles q,

which do not extend over the ends of the iiues and so leave them free tobe withdrawn, these seat-tiles q being secured in place in any desiredway. This leaves a vertical chamber or space q between the ends of thetilesk and the door r, which forms the uptake passage or port betweenthe iiues k and the flues 7a2. The same construction -is employed toform connection between the iiues Z and Z', forming the uptake-passageq2. To close these vpassages, the doors r r2, above referred to, areemployed, said doors tting within the doorframes s, and to which theclamp-arms S are hinged at s2, said clamp-arms engaging with lugs s3 andcarrying hand-screws S4, which engage with seats r4 on the outer facesof the door, so that after the door is luted with clay by means of saidclamp-arms and hand-screw it may be securely locked to form a steamtightjoint. The inner faces of the door are lined with brick or tiling, as atr, to protect them from the heat.

Wrhen the said furnace is in use, the high heat necessary forsuperheating the steam is generated Within the furnace, and where solidfuel is used this is accomplished by building thelire upon the grate c'within the fire-chamber e, the iiameV and heated products from the samerising around the series Z of steam-superheating fines, then .passingaround the series Z, then passing over the bridge-wall g and around theseries k2, and thence passing downwardly through the chamberf, aroundthe linesV Zt" and 7o, and circulating around the returnsteam-superheating pipes h and escaping through the fluefl to thechimney or boiler.

Meanwhile steam enters through the inletpipe Z and circulates throughthe return su-V f perheating-pipes h, passing through the series Zt',h2, ha, h4, and h5, above described, and eventually entering thesmallest of the hori- Zontal steam-superheating flues. The'steam thenpasses along the flue 7c through the uptake-passage n into the flue 7i;and along said flue into the uptake-passage q', and thence into theflues k2, whence it passes by the horizontal passage n across to theiiues Z', forming the upper series in the main fire-chamber, passingalong these iiues, and thence by the downtake-passage q2 into the fluesZ, from which it enters the passage n3 and iiows into the outlet-pipeZ2. It will thus be seen that the steam is passing in opposite course tothe heated products, and therefore is being brought into a hotter partof the furnace as it passes through one horizontal set of lines toanother, and is therefore gradually raised to a very high heat, and thatat the saine time that the steam is thus expanded provision :is made toreceive the expanded steam on account of the increased cross-sectionalarea of the horizontal superheating-iiues. Such construction providesfor the bringing of the steam to an exceedingly high heat-indeed to suchtemperature that it is capable of heating and maintaining the coal inthe gas-generator at proper heat for gas-making, and also pro` vides thenecessary heat for causing its own decomposition in the presence of thecoal, as above set forth. As it is thus heated and expanded on accountof the increased space to IOO IIO

esseci y .Y n e receive the expanded steam the pressure is notmaterially increased, and therefore the i liability of leakage is muchdecreased, animyis,

ble to hold it if under highl pressure.

portant point in thel heating of the steam in.

tile Iiues and under extremely high temperatures Where it Vwouldbepractically impossi- In case of breakage or wearing out of any of thelines they may be quickly changed, access tothe same being providedthrough the doors'r, fr', or r2, above described', While the `iiues areproperly-centered. and supported within the side walls. x What I claimas my invention,l and desire to secure by Letters Patent, is-f 1. Asteam-,superheatingfurnace having a fire-chamber. containing a series ofhorizontal tubular tile fines-mounted in the sidewalls,

said dues increasing in cross-sectional area fromk the steam-inlet tothe steam-discharge,

substantially as set forth. Y

^ 2. A steam-superheatmg furnace' having a fire-chamber and adoWntake-chambeig separated therefrom by a bridge-Wall and having anoutlet-flue at its base, said chambers each containing a series oftubular tile flues mounted in theside Walls and extending across thesame, substantially asfse't forth;

3. A steam-superheating-furnace having a fire-chamber and adowntake-chamber, separated therefromby a bridge-Wall and having anoutlet-flue at its base,said chambers each containing a series oftubular tile dues mounted in the side Walls and extending across the`same, said flues increasing in cross-sectional area from the steam-inletto the steam-discharge, substantially Vas set forth. l

4.- A steam-snperheating V,furnace having therein a series ofreturn-bend steam-superheating pipes with which the steam-inlet pipecommunicates and a series of horizontal tiley dues with the first ofwhich said return-bend pipes communicate, said ilues communicating witheach other andtvith the outlet-pipe, substantially as set forth.

plates to close 5. A steam-superheating furnace having a fire-chamberand a doWntake-chamber separated therefrom by a bridge-Wall and havingan outlet-due at its base, said chambers each containing a series oftile fluesl mounted -inv `the side Walls and extending across the same,andV a series of return-bend steam-superheating vpipes arranged Withinsaid downtakechamber and communicating with one of said tile fines.,substantially as set forth.

' 6. A steam-superheating furnace having a.

series cfhorizontal tile iiues extending across 'the rsame and seated inthe side walls thereof, andlpassages formed Within the side Wallsformi-ng communication 'between said iues, the inner ends of said flues,resting in seattiles having angular recesses to receive them,substantially as set forth. l 7.. A steam-superheatin g furnace havingaseri es of horizontal tile fines extending across the same and seated inthe sid'e Walls there- 0f,.and passages formed Within the side Wallsforming communication between` said fines, ytheinuer ends of said duesresti-ng in seattiles having an guiar recesses to receive them, and vtheoppositel faces of said tiles having like angular recesses for receivingthe tile the passages, substantially as set forth. 8. Asteam-su-perheating furnace havinga series-of tile iiue's extendingacrossthe same and supported in they sidewalls, a chamber or passage ofas great diameter as the outer diameter of the iiue,vinto which one endof the tile iiue enters, and said passage'being' closed by aldoor,substantially as and for the. purposes set forth. f

In testimony whereof I, the said FRANK Ia n JAMES I. KAY,

ROBER'I." C. TOTTEN.

